Bobbbt mouse withycombe



Nov. 29, 1927. Re. 16,802

original FiledJime s. 1922 i seirations oi' filaments for a portion of its width. The strip is then wound on a former,

i e para]` but not the' filaments, being suitably cementedor secured together.

Nov. 29, 1927.

PATNT OFFICE.

m1' IOBBE WITEYCOMBE, OF SYDNEY, NEW SO'U'TH WALES, AUSTRALIA.

TOOTHBRUSH.

Oflllnal Io. l,475,108, dated November 20, 1923, Serial No. 566,284, filed June 8, 1922. Application for relssue led May` 7, 1925.

This invention relates to brushes for cleaning the teeth, or massaging' the gums in which the frictional surface is composed of soft rubber. p

`The Object of the resent invention is to i provide a brush whic can be constructed at comparatively low cost and in which the frietime] surface is readily removable.

i to the invention, I take a narroy strip o soft rubber and divide it into referabl of elongated shape, under tension, l or conntric layers or windings,

The wound trip is then removed, the serrations or filaments forming the frictional surface. handle or holder has a stem at the end of which is an extension having integral or secured thereon, a rigid base or core piece, approximately corresponding in shape to the. said former on which base the wound stri or frictional surface is sprung so as to be eld thereon.

V1' now refer to the accompanying sheet of drawings which illustrate one form of my invention, Fi 1 being a perspective view ofa. toothbrus made in accordance with my invention.

Fig. 2 is a similar view of a portion of al handle having core pleces on an extension thereof.

` Fig. 3 represents in plan view a fragment Of rubber strip divided into filaments for a `pm'tion of its width.

4=is an inverted plan of the wound atri after removalfrom a former, while ig. 5 is a section on line A-B, Fig. 4. `The same numerals indicate the same or corresponding parts. i

i-The stri of rubber 7 is cut for a portion of its wi th into a series of filaments or Serial No. 28,741.

serrations 8 and the strip wound under tension on a suitable former into an elon ated shape, the adjacent folds or windin eing cementedl orsecured together. Mi way in the space 9 left on removal of the former I prefer to insert a spacer piece 10 and secure it by an aluminum or other metal fastening 11. The wound strip is then sprung onto the pieces 12, 12, rigid or integra-l with the extension 13 of the handle 14 so that the filaments form the frictional surfaces of the brush. The-wound strip is readily removable for cleaning purposes or for replacing With a new wound strip.

I claim: w i

1. A tooth or massage brush comprising a handle, having a pair of spaced lugs thereon, a strip of rubber serrated on one edge and wound upon itself under tension and sprung upon said lugs.

2. A tooth or massage brush comprising a handle, having a pair of spaced lugs thereon, a strip of rubber serrated on one edge and wound upon itself under tension and sprung upon said lugs, a spacer piece centrally of said rubber, and a fastening holding said spacer piece in place.

3. A brush comprising a back having a laterally projecting `attachment structure` and adetachable brush body consisting of a serrated rubber strip wound upon itself 

